CFD를 이용한 표면 거칠기에 따른 선박의 저항 성능추정에 관한 연구
A Study on Predicting Ship Resistance Performance due to Surface Roughness Using CFD
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초록
In recent, shipping companies have made an enormous effort to improve the operation of vessel in various approaches, due to recession of shipping market and increasing competition among shipping companies. One of important parameters for improving the efficiency of vessel is the resistance performance that consist of friction and residual resistance. Especially, it is recognized that the friction resistance tends to be affected by conditions of vessel’s surface and occupies approximately 70~90% of the total resistance for slow speed ships. In general, the surface of vessel is covered with various type of paint to reduce fouling and corrosion. As time goes by, however, it is so hull roughness would be increased by fouling over the wetted surface that anti-fouling paints, such as CDP(Controlled Depletion Paint), Tin-Free SPC(Self Polishing Co-polymer) or Foul Release, are applied evenly on the hull surface. Nevertheless, these anti-fouling paints could not prevent fouling absolutely. A fundamental study on evaluating ship resistance performance variation due to hull roughness has been performed using a commercial software, Star-CCM+, which solves the continuity and Navier-Stokes equations for incompressible and viscous flow. The results of present simulation for plate are compared with some experimental data available and the effect of surface roughness to ship resistance performance is discussed.
Abstract
In recent, shipping companies have made an enormous effort to improve the operation of vessel in various approaches, due to recession of shipping market and increasing competition among shipping companies. One of important parameters for improving the efficiency of vessel is the resistance performance that consist of friction and residual resistance. Especially, it is recognized that the friction resistance tends to be affected by conditions of vessel’s surface and occupies approximately 70~90% of the total resistance for slow speed ships. In general, the surface of vessel is covered with various type of paint to reduce fouling and corrosion. As time goes by, however, it is so hull roughness would be increased by fouling over the wetted surface that anti-fouling paints, such as CDP(Controlled Depletion Paint), Tin-Free SPC(Self Polishing Co-polymer) or Foul Release, are applied evenly on the hull surface. Nevertheless, these anti-fouling paints could not prevent fouling absolutely. A fundamental study on evaluating ship resistance performance variation due to hull roughness has been performed using a commercial software, Star-CCM+, which solves the continuity and Navier-Stokes equations for incompressible and viscous flow. The results of present simulation for plate are compared with some experimental data available and the effect of surface roughness to ship resistance performance is discussed.
참고문헌 (25)
- American Bureau of Shipping, "The Inspection Maintenance and Application of Marine Coating Systems" (2007), ABS
- American Bureau of Shipping, "Ship Energy Efficiency Measures Status and Guidance", ABS, ~ (2013)
- Candries, M., "Foul Release systems and drag. Consolidation of Technical Advances in the Protective and Marine Coatings Industry", Proceedings of the PCE 2001Conference, Antwerp, pp.273~286 (2001)
- Carlton, J., "Marine Propellers and Propulsion" (2012), Butterworth-Heinemann
- Demirel, Y.K., "A CFD Model for the Frictional Resistance Prediction of Antifouling Coatings", Ocean Engineering, 89, pp.21~31 (2014)
- "Surface roughness conversions" (2016)[URL]
- The Frictional Resistance and Turbulent Boundary Layer of Rough Surfaces, "Granville, P. S.", ~, pp.Hydromechanics Laboratory Research and Development Reprot No.1024 (1958)
- Granville, P. S., "Three Indirect Methods for the Drag Characterization of Arbitrarily Rough Surfaces on Flat Plates", Journal of Ship Research, 31(1), pp.70~77 (1987)
- "Professional marine & offshore" (2016)[URL]
- "ISO 15016, Ships and Marine Technology-Guidelines for the Assessment of Speed and Power Performance by Analysis of Speed Trial Data", ISO, ~ (2002)
- Izaguirre Alza, P., "Drag reduction through special paints coated on the hull", International Conference on Ship Drag Reduction SMOOTH-SHIPS (2010)
- Jang, J.H., "An experimental study on the drag of a flat plate painted with antifouling paints", Proceedings of the The Korean Association of Ocean Science and Technology Societies, pp.1104~1110 (2010)
- Kim, W.J., "Measurement of Flows Around Modern Commercial Ship Models", Experiments in Fluids, 31, pp.567~578 (2001)
- Kwon, Y.J., "A Research on Ship Hull Roughness : Estimation Method and Effect on Ship Performance", Transactions of the Society of Naval Architecture of Korea, 33(2), pp.30~35 (1996)
- 권영중, "선박의 속력성능에 관한 연구", 한국해양공학회지, 17(2), pp.67~71 (2003), 한국해양공학회
- Menter, F. R., "Two-Equation Eddy-Viscosity Turbulence Models for Engineering Applications", AIAA Journal, 32(8), pp.1598~1605 (1994)
- Molland, A.F., "Ship Resistance and Propulsion" (2011), Cambridge University Press
- 백부근, "방오 도료가 도장된 평판에 대한 항력 성능 연구", 대한조선학회 논문집, 50(6), pp.399~406 (2013), 대한조선학회
- Schultz, M. P., "Frictional Resistance of Antifouling Coating System", Journal of Fluids Engineering, 126, pp.1039~1047 (2004)
- Schultz, M. P., "Effects of Coating Roughness and Biofouling on Ship Resistance and Powering", Biofouling, 23(5), pp.331~341 (2007)
- 석준, "대한해협에서의 수온 및 염도변화를 고려한 선박의 저항성능 예측을 위한 기초 연구", 한국해양공학회지, 29(6), pp.418~426 (2015), 한국해양공학회
- Sulaiman, O., "Qualitative Method for Antifouling Long Life Paint for Marine Facilities or System", Biosciences Biotechnology Research Asia, 7(2), pp.675~688 (2010)
- Townsin, R. L., "The ITTC Line-its Genesis and Correlation Allowance" (1985), The Naval Architect
- Usta, O., "A Study for the Effect of Surface Roughness on Resistance Characteristics of Flat Plates" (2013), Marine Coatings
- 윤정의, "폐수 이송용 원심펌프의 성능해석에서 표면 거칠기의 영향", 대한기계학회논문집 B, 38(2), pp.147~153 (2014), 대한기계학회